1、back up

支持，證實（某種說法）

Radio signals received from the galaxy's centre back up the black hole theory.

從該星系中心收到的無線電信號證實了黑洞理論。

Her views are backed up by a 1989 Home Office report on crime.

1989年內政部的一份犯罪報告印證了她的觀點。

備份（文件）

Make a point of backing up your files at regular intervals.

一定要定期備份文件。

I get so annoyed when I lose work because I've forgotten to back it up.

當我因為忘了備份把完成的工作弄丟時，真是懊惱極了。

將…付諸實施

The Secretary General says the declaration must now be backed up by concrete and effective actions.

秘書長說現在必須將宣言付諸具體有效的行動。

It is time the Government backed up its advert campaigns with tougher measures.

是政府采取更嚴厲的措施來兌現其宣傳承諾的時候了。

2、come up

走近;走到跟前

Her cat came up and rubbed itself against their legs.

她的貓跑上前來，在他們腿上蹭來蹭去。

He came up to me and said: 'Come on, John.'

他走到我跟前說：“快點，約翰?！?/p>

被提及;被討論

The subject came up during a pre-dinner drink with our guests.

在與客人喝餐前酒的時候，有人提到了這個話題。

Jeane Kirkpatrick's name has come up a lot.

珍妮·柯克帕特里克的名字被多次提到。

即將發生;即將到來

Plan your activities so that you are rested and refreshed when something important is coming up.

做好日常規劃，這樣一旦發生大事，才能夠從容不迫。

We do have elections coming up.

我們的確將要進行選舉。